Erectile Dysfunction, commonly called ED, is a condition where a man finds it difficult to get or keep an erection firm enough for sexual activity. It can happen due to stress, age, diabetes, poor blood flow, high blood pressure, anxiety, smoking, obesity, or certain medicines. The good thing is that ED is treatable, and many men improve with the right medical guidance.
Two common medicines used for ED are Avanafil and Viagra. Both help improve blood flow to the penis and support an erection when a man is sexually stimulated. However, they are not exactly the same. Avanafil is known for faster action, while Viagra is one of the oldest and most trusted ED medicines worldwide.
If you are confused between Avanafil vs Viagra, this guide will help you understand their differences in working time, duration, side effects, food interaction, cost, and suitability.
What is Avanafil?
Avanafil is an ED medicine that belongs to a class of drugs called PDE5 inhibitors. It is sold under the brand name Stendra in some countries. It works by relaxing blood vessels and increasing blood flow to the penis during sexual stimulation.
One of the biggest benefits of Avanafil is its fast action. According to FDA prescribing information, Stendra may be taken as early as about 15 minutes before sexual activity, depending on the dose and doctor’s advice. The usual starting dose is 100 mg, but it may be reduced to 50 mg or increased to 200 mg based on effectiveness and tolerance. It should not be taken more than once a day.
Because it may work quickly, Avanafil can be useful for men who want less planning before intimacy. It may also be less affected by food compared with some older ED medicines.
What is Viagra?
Viagra is the brand name for Sildenafil Citrate. It was the first widely approved oral medicine for Erectile Dysfunction and is still one of the most recognized ED treatments. Viagra also belongs to the PDE5 inhibitor class.
For most patients, the FDA label recommends Viagra 50 mg about 1 hour before sexual activity. It may be taken anywhere from 30 minutes to 4 hours before sex. Depending on results and side effects, a doctor may adjust the dose to 25 mg or 100 mg. It should not be used more than once per day.
Viagra has a long history of use, and generic Sildenafil is widely available. This often makes it easier to find and more affordable than newer ED medicines.
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Cenforce 100
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Avana 200
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Kamagra Oral Jelly
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Fildena 100
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How Do Avanafil and Viagra Work?
Avanafil and Viagra work in a similar way. They block an enzyme called phosphodiesterase type 5, also known as PDE5. When PDE5 is blocked, the body can maintain higher levels of a natural chemical that helps relax blood vessels in the penis. This improves blood flow and supports an erection during sexual stimulation.
Mayo Clinic explains that oral ED medicines such as Avanafil and Sildenafil enhance the effect of nitric oxide, a natural chemical that relaxes muscles in the penis and increases blood flow. These medicines help a man get an erection from sexual stimulation, but they do not create sexual desire on their own.
This means Avanafil and Viagra will not cause an automatic erection. Sexual arousal is still needed.
Avanafil vs Viagra: Quick Comparison
| Feature | Avanafil | Viagra |
| Active ingredient | Avanafil | Sildenafil Citrate |
| Common brand | Stendra | Viagra |
| Medicine class | PDE5 inhibitor | PDE5 inhibitor |
| Usual starting dose | 100 mg | 50 mg |
| Time to take | As early as about 15 minutes before sex | Usually about 1 hour before sex |
| Available strengths | 50 mg, 100 mg, 200 mg | 25 mg, 50 mg, 100 mg |
| Food effect | Less affected by food | High-fat meals may delay effect |
| Generic availability | Limited in many places | Widely available |
| Best for | Faster action and flexibility | Affordability and easy availability |
Speed of Action
The biggest difference between Avanafil and Viagra is how quickly they may start working.
Avanafil is generally faster. Some men may take it about 15 minutes before sexual activity, depending on the prescribed dose. This makes it a convenient option for men who do not want to wait too long after taking the medicine.
Viagra usually needs more time. Most men are advised to take it about 1 hour before sex, though it may be taken from 30 minutes to 4 hours before sexual activity.
So, if your main concern is quick action, Avanafil may be the better option. But if you do not mind planning ahead, Viagra can still work very well.
Duration of Effect
Both Avanafil and Viagra can help for several hours. This does not mean the erection will last continuously for hours. It means the medicine remains active in the body and can help you respond better to sexual stimulation during that time.
Viagra commonly works for around 4 to 6 hours in many men. Avanafil may also last for up to around 6 hours in some users. The actual duration can vary from person to person.
Age, metabolism, food intake, alcohol use, dose, stress level, and overall health can all affect how long the medicine works.
Food and Alcohol Interaction
Food can make a difference in how ED medicines work.
Avanafil is usually less affected by food. This means it may still work well even if taken after a meal. That can be helpful if intimacy happens after dinner or during a planned evening.
Viagra can be taken with or without food, but a heavy or high-fat meal can slow down its absorption. The FDA label notes that a high-fat meal can delay the time Viagra takes to reach peak levels in the body.
Alcohol should be limited with both medicines. Drinking too much alcohol can make ED worse and may increase side effects such as dizziness, headache, flushing, or low blood pressure.
Side Effects of Avanafil and Viagra
Both medicines can cause side effects because they affect blood flow in the body. Most side effects are mild, but some can be serious.
Common side effects may include:
Headache, facial flushing, blocked nose, dizziness, upset stomach, back pain, and tiredness.
Viagra may also cause mild vision changes in some men, such as blurred vision or a blue tint. This is because Sildenafil can affect certain enzymes related to vision. Avanafil is considered more selective for PDE5, so some men may tolerate it better, but side effects can still happen.
Serious side effects are rare but need medical help. These may include chest pain, sudden vision loss, sudden hearing loss, fainting, or an erection lasting longer than 4 hours.
Dosage Strengths
Avanafil is commonly available in 50 mg, 100 mg, and 200 mg strengths. The usual starting dose is 100 mg, but doctors may adjust it based on how well it works and how the body tolerates it.
Viagra is available in 25 mg, 50 mg, and 100 mg tablets. Most men start with 50 mg, but the dose may be reduced or increased depending on response.
You should never increase the dose yourself. A higher dose does not always mean better results. It may only increase the risk of side effects.
Price and Availability
Viagra has one major advantage: availability. Since Sildenafil has been available for many years, generic versions are widely sold in many countries. This usually makes it more affordable.
Avanafil is newer and may not be available everywhere. In some places, it may cost more than generic Sildenafil because fewer generic options are available.
If budget is your main concern, Viagra or generic Sildenafil may be easier to manage. If faster action and convenience matter more, Avanafil may be worth discussing with your doctor.
Which Medicine May Suit You Better?
Avanafil may be better for men who want quicker results, prefer more spontaneous timing, want less food-related delay, or have had side effects with Sildenafil.
Viagra may be better for men who want a well-known medicine, need a more affordable option, prefer easy availability, or have already used Sildenafil successfully.
There is no single best ED medicine for everyone. Some men respond better to Avanafil, while others get better results with Viagra. The right choice depends on your body, health condition, lifestyle, other medicines, and doctor’s recommendation.
Safety Precautions
Avanafil and Viagra should be used carefully. They are not suitable for everyone.
Do not take Avanafil or Viagra if you use nitrate medicines for chest pain. Combining PDE5 inhibitors with nitrates can cause a dangerous drop in blood pressure. Men taking alpha-blockers, blood pressure medicines, or heart medicines should also speak with a doctor before using ED medicine.
You should also consult a doctor if you have heart disease, liver disease, kidney disease, low blood pressure, uncontrolled high blood pressure, recent heart attack, recent stroke, eye disease, or a history of prolonged erections.
Mayo Clinic also notes that ED can sometimes be linked with other health problems, so regular erection problems should not be ignored.
Can You Switch from Viagra to Avanafil?
Yes, some men switch from Viagra to Avanafil when they want faster action or fewer food-related issues. Others may switch from Avanafil to Viagra because Sildenafil is easier to find or more affordable.
However, you should not switch without medical advice. You should also never take both medicines together. Taking two ED medicines at the same time can increase the risk of low blood pressure, dizziness, fainting, and other side effects.
Final Verdict: Avanafil vs Viagra
Both Avanafil and Viagra are effective ED treatments. They work in a similar way, but they fit different needs.
Avanafil may be the better choice if you want faster action, more flexibility, and less food interference. Viagra may be the better choice if you want a trusted, widely available, and more affordable option.
The best medicine is not the one that sounds stronger. It is the one that works safely and comfortably for your body. Always speak with a healthcare provider before starting or changing ED treatment.
FAQs
Is Avanafil better than Viagra?
Avanafil may be better for men who want faster action and more flexibility. Viagra may be better for men who want a widely available and affordable option. The better choice depends on your health, budget, timing needs, and body response.
Which works faster, Avanafil or Viagra?
Avanafil usually works faster. It may be taken as early as about 15 minutes before sexual activity. Viagra is commonly taken about 1 hour before sex, although it may be taken 30 minutes to 4 hours before sexual activity.
Can I take Avanafil and Viagra together?
No, you should not take Avanafil and Viagra together. Taking two ED medicines at the same time can increase the risk of side effects such as low blood pressure, dizziness, and fainting.
Does Avanafil have fewer side effects than Viagra?
Some men may tolerate Avanafil better because it is more selective for PDE5, but it can still cause side effects. Side effects vary from person to person, so doctor guidance is important.
Is Viagra cheaper than Avanafil?
In many cases, yes. Generic Sildenafil is widely available and often costs less than Avanafil. Avanafil may be more expensive because it is newer and less available in some regions.
Do Avanafil and Viagra increase sexual desire?
No. These medicines do not increase sexual desire. They only help improve blood flow to support an erection when sexual stimulation is present.
Which ED medicine should I choose?
Choose based on your doctor’s advice. Avanafil may be suitable if you want faster action. Viagra may be suitable if you want a proven and affordable option. Your medical history and current medicines matter most.
